551402561532 has 96 divisors (see below), whose sum is σ = 1367188248384. Its totient is φ = 172367872000.

The previous prime is 551402561527. The next prime is 551402561537. The reversal of 551402561532 is 235165204155.

551402561532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (551402561527) and next prime (551402561537).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551402561537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86790868 + ... + 86797220.

It is an arithmetic number, because the mean of its divisors is an integer number (14241544254).

Almost surely, 2^551402561532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551402561532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683594124192).

551402561532 is an abundant number, since it is smaller than the sum of its proper divisors (815785686852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551402561532 is a wasteful number, since it uses less digits than its factorization.

551402561532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7839 (or 7837 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 39.

Adding to 551402561532 its reverse (235165204155), we get a palindrome (786567765687).

The spelling of 551402561532 in words is "five hundred fifty-one billion, four hundred two million, five hundred sixty-one thousand, five hundred thirty-two".